Cable-trolley.



No. 805,338. PATENTED NOV. 21, 1905. J'. E. BOYLE.

CABLE TROLLBY.

APPLICATION FILED NOV. 12. 1904.

Ill

5 M 15;; WW aw, w/ wa ilttozmup UNITED STATES PATENT OFFICE.

JOHN E. BOYLE, OF SCRANTON, PENNSYLVANIA.

CABLE-TROLLEY.

Specification of Letters Patent.

Patented Nov. 21, 1905 Application filed November 12,1904. Serial No. 232,492.

To aZZ whom it may concern: I

supporting-trolleys, and is especially adapted for being hung upon continuous supportssuch as wires, rods, bars, or the likewithout the necessity of slipping the same over the end of such supports.

Theinvention consists in certain novel-constructions, combinations, and arrangements of parts, as will be hereinafter fully described and specifically claimed.

In the accompanying drawings, Figure l is a perspective View of a suspending or sup-' porting trolley, as hung from a wire, a portion of a cable being shown as lying across the trolley-wheel. Fig. 2 is a transverse vertical section through the trolley mechanism, taken on a line with the axis of the trolleywheel.

In the running of conductors for electrical purposes, and particularly the stringing or suspending from poles or other supports telegraph or telephone wires and cables, it is often necessary to employ an antifriction supporting means, over which the conductors or cables can be drawn. This is especially so in view of the modern practice of incorporating a large number of conductors in a single cable, making the same very heavy and unwieldy. In suspending such conductors or cables it is usual to employ a strong supporting-wire, as 1, which is first secured upon the poles or conductor-supports and drawn taut upon the same. The conductors are arranged next below the supporting-cable and secured thereto at intervals by suspending loops, usually of wire or other suitable material. In practice it is customary to employ a team or other power for drawing the cable from one pole to another and pulling the same from the spool upon which it was originally wound.

The supporting-trolley forming the subject of the present invention is made with a frame 2-, preferably constructed of strap or bar iron. The frame is made usually of a single piece of metal, the bar being bent to form a centrally-depending yoke 3, having parallel sides, while the upper ends are bent to one side in opposite directions and then brought inwardly at their ends, so as to be in alinement with the supporting wire or cable. These ends are then folded or bent to form hooks l, the said hooks being of sufficient size to receive and rest upon the supporting-cable. Set-scrcws 5 are employed at the supporting ends of the frame, the said set-screws extending into the hooks, so as to be capable of impingingupon the supporting wire or cable,and thus prevent the trolley-frame from slipping upon the wire or cable or from being accidental] y removed therefrom. The hooks at the upper ends of the arms of the frameare made to face in opposite directions, so that the frame can be quickly and easily suspended upon the supporting-cable, it being only necessary to raise the frame and twist it a little at an angle to the supporting cable, after which the frameis twisted back again into alinement with the supporting wire or cable, so that the hooks may drop into place upon the same. The tightening of the said screws will of courseoperate to clamp the frame into position upon the wire. In the lower or yoked portion of the frame is mounted an antifriction-roller or trolley-wheel 6, which is preferably of the grooved type, so that the cable in passing over the same will be properly guided in position. A bolt or other shaft? is passed through the sides of the frame and through the bearing in the center of the trolley-wheel. Spacing-washers 8 are preferably interposed between the ends of the trolley-wheel and the sides of the frame.

Of course it will be apparent that the frame instead of being made of a single piece of bariron bent as shown in the drawings may be constructed of a number of pieces which are suitably connected below the trolley-wheel. It is important that the space above the trolley-wheel be openthat is to say, that there be sufficient room between the hooked ends of the arms to permit the insertion of the cable which is to be drawn over the trolley-wheel and also the insertion of the supporting-wire upon which the device is to be suspended.

The device described may also be used as a traveling carrier by inverting it upon a support, the trolley-wheel running upon a supporting track, cable, or wire,while the load to be transported is suspended upon the hooks of the frame.

It will be evident that the device can be placed upon a cable and a support at any point Without the necessity of threading the same upon the ends of such cable or support.

It will be evident that the diagonal arrangement of the suspending-arms operates to brace the trolley against longitudinal movement with respect to its support.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A cable support comprising a frame made of a single bar bent to form a loop and spread apart at the ends to form inclined supporting and bracing hangers, and a trolleywheel journaled in said loop.

2. A cable-support comprising a frame, a trolleywheel journaled therein, and upwardly and diagonally extending arms at each end of the frame forming supporting-hangers, the diagonal direction of the hangers operating to brace the frame against longitudinal swinging or movement upon the support.

3. A cable-support comprising a frame having a loop at the bottom, a trolley-Wheel journaled in said loop, upwardly-extending arms, one projecting from each side of the frame and bent to extend diagonally upward from the said frame, hooks formed on the upper ends of said diagonal supports capable of engaging the supporting cable or Wire, a clampsorew for each hook to secure it upon its support, the diagonal arrangement of the arms operating to brace the trolley against movement longitudinally with respect to its support.

In testimony whereofI affix my signature in presence of two witnesses.

JOHN E. BOYLE.

Witnesses:

W. W. BAYLOR, MIoHAEL MoNUL'rY. 

